13．A．Hello，Mary! B．I called you but no one answered． C．I'm doing my homework． D．May I speak to John？ E．No，I'm very busy． F．Let's do some outdoor activities．
Jenny：Hello! Mary：Hello!This is Mary speaking． （56）D Jenny：Wait a minute，please． John：（57）A Mary：What are you doing，John？ John：（58）C Mary：What were you doing at this time yesterday？（59）B． John：Oh，I was taking a shower． Mary：What are you going to do this weekend？ John：I've no idea． Mary：（60）F John：OK，see you then．
7．A：Good morning! B：Good morning! A：（51）F？ B：Yes，please，I need a bag for school． A：Ok，（52）A？ B：Blue． A：（53）E？ B：It looks nice．（54）B？ A：Ten dollars． B：I'll take it． A：Here you are． B：Thank you． A：（55）C．
A．What color do you want？ B．How much is it？ C．You're welcome D．How are you． E．How about this one？ F．Can I help you．
